Q
How do you add a note to explain a line of code in JavaScript?

Answer & Solution

Answer: Option By adding a comment using //
Solution:
Single-line comments are added using // to explain a line of code.
Related Questions on Average

How can you temporarily disable a piece of code without deleting it?

A). By commenting it out using //

B). By placing it in a string

C). By removing it from the file

D). By placing it in a function

Can single-line comments be used to add TODO notes in code?

A). Yes

B). No

C). Only in certain cases

D). Only in multi-line comments

What is the syntax for writing an inline comment in JavaScript?

A). # This is an inline comment

B). // This is an inline comment

C). /* This is an inline comment */

D).

What will be the output of console.log('Hello World!'); // This is a comment?

A). Hello World!

B). Syntax Error

C). This is a comment

D). Undefined

What is the purpose of single-line comments in code?

A). To add executable code

B). To increase execution speed

C). To explain and document the code

D). To replace code

How can single-line comments help during debugging?

A). By highlighting errors

B). By temporarily disabling code

C). By changing code execution

D). By improving performance

Can single-line comments be used to disable code temporarily?

A). Yes

B). No

C). Only in certain cases

D). Only in multi-line comments

Why should comments be clear and concise?

A). To avoid confusion

B). To increase code execution speed

C). To ensure they are ignored by the interpreter

D). To make them look professional

What should you avoid when writing single-line comments?

A). Writing clear and concise comments

B). Writing too many comments

C). Writing comments that restate the code

D). Writing comments at the end of the code

How do you write a single-line comment in JavaScript?

A). # This is a comment

B). // This is a comment

C). /* This is a comment */

D).